The virtue of palladium-catalyzed domino reactions-diverse oligocyclizations of acyclic 2-bromoenynes and 2-bromenediynes
Article Abstract:
The study highlights all-intramolecular, intra-intermolecular, and all-intermolecular organopalladation cascades leading to 1,3,5-hexatrienes, which undergo consecutive 6pi-electrocyclizations with closure of three, two, or just one ring respectively. Sequences of cross-coupling reactions and Diels-Adler additions are also discussed, as well as tricycllizations of 2-bromoenediynes giving rise to bisannelated benzene and fulvene derivatives.
Publication Name: Accounts of Chemical Research
Subject: Science and technology
ISSN: 0001-4842
Year: 2005
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Is competition between Li(super +) and Mg(super 2+) the underlying theme in the proposed mechanisms for the pharmacological action of lithium salts in bipolar disorder?
Article Abstract:
Lithium salts are used for the treatment of bipolar disorder, but their pharmcological mode of action remains a matter of conjecture, Li(super +) and Mg(super 2+) share many physicochemical properties. Results are described that suggest that a competition mechanism between Li(super +) and Mg(super 2+) ions for Mg(super 2+) binding sites in cellular components is the underlying theme in putative mechanisms of Li(super +) action.
Publication Name: Accounts of Chemical Research
Subject: Science and technology
ISSN: 0001-4842
Year: 2006
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Nonlocal electronic distribution in metallic clusters: A critical examination of aromatic stabilization
Article Abstract:
The sigma-pi separation in all-metal aromatic and antiaromatic systems is determined and a computational approach is presented for measuring the propensity of distortions in a molecular system even where the sigma-pi separation is poor. It is revealed that all-metal clusters are orders of magnitude more polarized than the traditional pi-conjugated molecules and form stacked superclusters that are very stable and aromatic.
Publication Name: Accounts of Chemical Research
Subject: Science and technology
ISSN: 0001-4842
Year: 2007
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